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Article 4

Do Sicydium punctatum adults move in the Caribbean estuaries? New insight from strontium isotopes

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H. Tabouret1,2*, D. Monti3, J. Martin1,4, S. Berail1, C. Pecheyran1, P. Keith2, G. Bareille1
1 Laboratoire de Chimie Analytique Bio-Inorganique et Environnement, Institut des Sciences Analytiques et de Physico-Chimie pour
l’Environnement et les Matériaux, UMR 5254 CNRS - Université de Pau et des Pays de l’Adour, Pau, France
2 Muséum national d’Histoire naturelle, Département Milieux et Peuplements Aquatiques, Biologie des Organismes Marins et
Ecosystèmes Aquatiques (UMR BOREA 7208 CNRS/MNHN/UPMC/IRD), CP-026, 43 rue Cuvier, 75231 Paris, France
3 Université des Antilles et de la Guyane (DYNECAR, UMR BOREA CNRS/MNHN/UPMC/IRD), Laboratoire de Biologie marine,
UFR SEN, 97157 Pointe-à-Pitre, Guadeloupe, France
4 IRSTEA, Estuarine Ecosystems and Diadromous Fish Research Unit, 50 avenue de Verdun, 33612 Cestas Cedex, France
Corresponding author: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

ABSTRACT. – Strontium isotopic variations (87Sr:86Sr) were investigated in otoliths of an amphidromous goby, Sicydium punctatum, coming from a tropical insular river and showing contrasted depositional patterns of barium:calcium in otolith (Ba:Caotolith). In our study, varying as well as non-varying Ba:Caotolith individuals exhibited unchanged 87Sr:86Srotolith throughout the adult phase with values typical of stream water flowing through volcanic substrate (0.7053 ± 0.0003). These results unambiguously discard the Ba:Caotolith peaks as markers of migrations between freshwater and brackish estuarine water during the adult phase of the species and open on investigations of sources of variations on microhabitats or unknown physiological effects.

You are here: Volume 65 (2015) Issue 4 Article 4
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